
#include <iostream>
#include <string>
using namespace std;

void func(int* num)
{
    cout << "this is the ptr function..." << endl;
}

void func(int num)
{
    cout << "this is the normal function..." << endl;
}

int main(int argc, char** argv)
{
    func(nullptr);
    func(0);
    return 0;
}
